10122031121021 has 2 divisors, whose sum is σ = 10122031121022. Its totient is φ = 10122031121020.

The previous prime is 10122031120991. The next prime is 10122031121057. The reversal of 10122031121021 is 12012113022101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8515249248100 + 1606781872921 = 2918090^2 + 1267589^2 .

It is a cyclic number.

It is not a de Polignac number, because 10122031121021 - 2³⁴ = 10104851251837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10122031121221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061015560510 + 5061015560511.

It is an arithmetic number, because the mean of its divisors is an integer number (5061015560511).

Almost surely, 2^{10122031121021} is an apocalyptic number.

It is an amenable number.

10122031121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10122031121021 is an equidigital number, since it uses as much as digits as its factorization.

10122031121021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10122031121021 its reverse (12012113022101), we get a palindrome (22134144143122).

The spelling of 10122031121021 in words is "ten trillion, one hundred twenty-two billion, thirty-one million, one hundred twenty-one thousand, twenty-one".